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AC Servo Drive – PANASONIC MSD011P1EC03
The MSD011P1EC03 is a 100 W single-phase AC servo drive (“AC Servo Drive”) manufactured by Panasonic, belonging to the MINAS family. The part number identifies a drive with single-phase AC input, EC-type encoder interface, and revision 03. Designed for the control of AC brushless servo motors, it is documented on CNC machining centres, CNC turning centres, and multi-axis industrial automation systems.
The AC servo drive is the power and control unit that receives position, speed, or torque references from the CNC controller and drives the servo motor with high precision through a sinusoidal PWM regulation loop. In the event of failure, the corresponding machine axis loses motion control: CNC program execution is interrupted and the machine stops in alarm, making any operation on the affected axis impossible.
Panasonic Corporation (formerly Matsushita Electric Industrial Co., Ltd.), founded in 1918 in Osaka, Japan, is one of the world’s leading manufacturers of industrial and consumer electronics. The Factory Automation division produces the MINAS series of servo drives and servo motors, currently in its A6 generation. Products in the MSD series belong to earlier generations and are to be considered legacy / discontinued, superseded by the A4, A5, and A6 families.
Main Technical Specifications
| Type | Single-phase AC servo drive |
| Part number | MSD011P1EC03 |
| Brand | Panasonic (MINAS series) |
| Known application | CNC machining centres, CNC lathes, linear and rotary axes, industrial robotics |
| Function | Position, speed and torque control of AC brushless servo motor |
| Rated output power | 100 W (0.1 kW) |
| Input voltage | Single-phase 200–230 V AC, 50/60 Hz |
| Rated output current | ~0.9–1.5 A |
| Encoder interface | EC type – incremental encoder (typical 2500 P/R) |
| Reference input | Analogue ±10 V / pulse train |
| Communication | RS-232C / RS-485 (typical MINAS series) |
| Weight | ~0.5–1.2 kg |
| Dimensions | ~160 × 50 × 165 mm |
| Production status | Legacy / discontinued — available as used, surplus or through specialist repair only |